must vaporize
Regular verb: vaporize - vaporized- vaporized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must vaporize
you must vaporize
he must vaporize
we must vaporize
you must vaporize
they must vaporize 	I must be vaporizing
you must be vaporizing
he must be vaporizing
we must be vaporizing
you must be vaporizing
they must be vaporizing	I must have vaporized
you must have vaporized
he must have vaporized
we must have vaporized
you must have vaporized
they must have vaporized	I must have been vaporizing
you must have been vaporizing
he must have been vaporizing
we must have been vaporizing
you must have been vaporizing
they must have been vaporizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not vaporize
you must not vaporize
he must not vaporize
we must not vaporize
you must not vaporize
they must not vaporize 	I must not be vaporizing
you must not be vaporizing
he must not be vaporizing
we must not be vaporizing
you must not be vaporizing
they must not be vaporizing	I must not have vaporized
you must not have vaporized
he must not have vaporized
we must not have vaporized
you must not have vaporized
they must not have vaporized	I must not have been vaporizing
you must not have been vaporizing
he must not have been vaporizing
we must not have been vaporizing
you must not have been vaporizing
they must not have been vaporizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I vaporize?
must you vaporize?
must he vaporize?
must we vaporize?
must you vaporize?
must they vaporize? 	must I be vaporizing?
must you be vaporizing?
must he be vaporizing?
must we be vaporizing?
must you be vaporizing?
must they be vaporizing? 	must I have vaporized?
must you have vaporized?
must he have vaporized?
must we have vaporized?
must you have vaporized?
must they have vaporized? 	must I have been vaporizing?
must you have been vaporizing?
must he have been vaporizing?
must we have been vaporizing?
must you have been vaporizing?
must they have been vaporizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not vaporize?
must you not vaporize?
must he not vaporize?
must we not vaporize?
must you not vaporize?
must they not vaporize? 	must I not be vaporizing?
must you not be vaporizing?
must he not be vaporizing?
must we not be vaporizing?
must you not be vaporizing?
must they not be vaporizing? 	must I not have vaporized?
must you not have vaporized?
must he not have vaporized?
must we not have vaporized?
must you not have vaporized?
must they not have vaporized? 	must I not have been vaporizing?
must you not have been vaporizing?
must he not have been vaporizing?
must we not have been vaporizing?
must you not have been vaporizing?
must they not have been vaporizing?